The automaker cited conditions that may cause ignition keys to become stuck or inadvertently move. The affected vehicles were produced before May 12, 2008.

Customers are advised to detach their ignition keys from key rings and other keys in the meantime. They are also advised to "confirm their ignition keys are set in the 'On' position after starting their vehicles."

"This will assure engine power and functionality of all systems, including front airbags," Chrysler said.

Chrysler said it is aware of a single minor accident that was "possibly related" to the recall, but said it is unaware of any related injuries.